造成冷却水温度过高的原因可能是()
A.水泵轴承松旷
B.百叶窗全开,无法关闭
C.节温器故障
D.风扇皮带过紧
参考答案:C
— When did you become a volunteer?
— Two years ago. I _____ this group since then. [ ]
A. joined
B. have joined
C. have been in
英国近代著名的廉价报纸《每日电讯报》发刊于( )
A.1833年
B.1836年
C.1841年
D.1855年